1.Electron microscopic study on the motor control system of the brain of the head-irradiated rats II. ultrastructural study on the pineal gland of the head-irradiated rats.
Tae Seung CHO ; Nam Gil YANG ; E Tay AHN ; Jeong Sik KO
Korean Journal of Anatomy 1991;24(1):36-53
No abstract available.
Animals
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Brain*
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Pineal Gland*
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Rats*
2.The Effect of Bromocriptine Treatment for Invasive Prolactinoma.
Moon Sool YANG ; Sun Ho KIM ; Seung Gil LIM ; Seung Koo LEE
Journal of Korean Neurosurgical Society 2005;37(4):275-281
OBJECTIVE: The prolactinoma is the most common pituitary tumor and sometimes shows severe invasiveness to the adjacent cavernous sinus, especially in the male patient. The dopamine agonist can be used as an alternative treatment modality to surgery. But, the transsphenoidal or transcranial approach for tumor removal has been more preferred treatment option of neurosurgeons in invasive prolactinoma. Especially rapid decompression of mass effect and resolution of the neurologic deficit is demanded. The prospective study is done in order to identify the therapeutic efficacy of bromocriptine as an initial treatment option for the invasive prolactionomas. METHODS: Twenty patients with invasive prolactinoma were studied. Preoperative neurological and endocrinological evaluations were done, and size and invasiveness of the tumor was estimated on MRI. Bromocriptine was administrated by increasing dose planning reaching maximum dose at 1month of treatment, with close neurological and endocrinological monitoring. At 3months after treatment, MRI was taken and decision was made whether to continue bromocriptine or to have surgical intervention. RESULTS: Thirteen patients showed excellent result with only bromocriptine treatment. These patients showed not only marked reduction of tumor volume and prolactin level, but also, improving clinical symptoms and other hormonal deficits. 13patients who had visual field defect and decreased visual acuity had all improved visual symptoms. But, the remaining 4patients required surgical treatment due to insufficient reduction of tumor size inspite of normalized prolactin level within 3months. Remaining 2patients had 20~30% of tumor size reduction, but prolactin level was not normalized. One patient required radiation therapy. CONCLUSION: Bromociptine can be used as initial treatment for the invasive prolactinomas with careful monitoring of the neurological and endocrinological status. It should be carefully followed up for tumor size reduction within 3 months after initiation of treatment.
Bromocriptine*
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Cavernous Sinus
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Decompression
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Dopamine Agonists
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Humans
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Magnetic Resonance Imaging
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Male
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Neurologic Manifestations
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Pituitary Neoplasms
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Prolactin
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Prolactinoma*
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Prospective Studies
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Tumor Burden
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Visual Acuity
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Visual Fields
3.6 Cases of Hand Arm Vibration Syndrome in Grinding Workers Exposed to Hand-arm Vibration.
Shang Hyuk YIM ; Rokho KIM ; Gil Seung YANG ; Jung In YANG ; Sang Sup KIM ; Hyoung Joon CHUN ; Si Bog PARK
Korean Journal of Occupational and Environmental Medicine 2000;12(3):421-429
OBJECTIVES: To confirm the HAVS in workers exposed to hand-arm vibration with using the objective diagnostic methods METHODS: Several tests were used to help substantiate a clinical diagnosis of HAVS. Some other diseases were excluded by a medical interview, hematologic assessment, urinalysis, X-rays. The hand-arm vibration acceleration level of the grinder was evaluated for considering HAVS. Peripheral vascular changes were examined by a cold provocation test. An electromyography was implemented to ascertain the peripheral neural changes. RESULTS: 8 workers with symptoms in hands & fingers, exposed to hand-arm vibration were examined. Some other diseases(primary Raynauds disease, secondary Raynauds disease in not occupational origin) were excluded by a medical interview, hematologic assessment, urinalysis, X-rays. The hand-arm vibration acceleration level of the grinder was 7. 9 m/sec2. The recovery time of a skin temperature followed finger cooling was significantly prolonged in 6 workers with HAVS. The nerve conduction velocity was reduced in 6 workers with HAVS. CONCLUSIONS: So we report 6 cases of HAVS in grinding workers exposed to hand-arm vibration diagnosed objectively by an exclusion of some other disease, handarm vibration acceleration level, cold provocation test, electromyography.
Acceleration
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Diagnosis
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Electromyography
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Fingers
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Hand*
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Hand-Arm Vibration Syndrome*
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Neural Conduction
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Raynaud Disease
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Skin Temperature
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Urinalysis
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Vibration*
4.Bullous Pemphigoid Associated with Cerebral Infarction: Hypereosinophilia as a Possible Mechanism.
Wookjin YANG ; Han Gil JEONG ; Seung Hoon LEE
Journal of the Korean Neurological Association 2017;35(3):170-172
Bullous pemphigoid (BP) is an autoimmune skin disease, which manifests as subepidermal blisters with severe itching. BP has been reported to be associated with a higher prevalence of cerebrovascular diseases in population-based studies. However, the mechanism of cerebral infarction from BP has not been elucidated yet. We hereby suggest that the missing link between BP and cerebral infarction may be eosinophil, through a case of a woman with multifocal embolic infarction.
Blister
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Cerebral Infarction*
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Cerebrovascular Disorders
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Eosinophils
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Female
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Humans
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Infarction
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Pemphigoid, Bullous*
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Prevalence
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Pruritus
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Skin Diseases
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Stroke
5.Two Cases of Tailgut Cyst.
Hun LEE ; Jae Hwan OH ; Seung Yeon CHO ; Dal Mo YANG ; Seung Yeon HA
Journal of the Korean Society of Coloproctology 2001;17(4):209-212
Tailgut cysts in retrorectal or presacral space are rare and the derivatives of the embryonic post-anal gut. It is thought to arise from vestiges of embryonic hindgut. The lesions were usually multicystic and lined by a variety of epithelial types, including ciliated columnar, mucin-secreting columnar, transitional, and squamous epithelium. Tailgut cyst has been found in men and women of various ages but is more common in women and is usually associated with middle age. They may be the source of the chronic perirectal symptoms and rarely undergo malignant change, so early diagnosis and accurate evaluation is important. Complete surgical resection should be considered because of a long term risk of malignant change. We report two cases of tailgut cyst.
Early Diagnosis
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Epithelium
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Female
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Humans
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Male
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Middle Aged
10.Patterns of Linear Enamel Hypoplasias among Korean Skeletal Samples from the Joseon Dynasty Period.
Sunyoung PAK ; Eun Jin WOO ; Yang Seung JEONG ; Gil Hwan CHO
Korean Journal of Physical Anthropology 2011;24(3):123-134
Dental linear enamel hypoplasia (LEH) is probably one of the most widely used developmental stress indicators among all known skeletal stress indicators. This research examined LEH on the permanent anterior teeth of 160 human skeletal remains from the Joseon Dynasty period. The purpose of this investigation is to understand the characteristics of the developmental stresses experienced by the people of the Joseon period by analyzing the patterns of LEH incidences. The skeletal remains analyzed for this research were excavated during an archaeological investigation at a construction site in Eunpyeong-gu, Seoul, South Korea. Eunpyeong site is estimated to date from the late 15th century to the late 19th century based on the burial type and goods discovered within the graves. Of all the skeletal remains found at this site, 160 individual specimens with at least one of the permanent anterior teeth constituted the sample of the study. Information regarding each individual specimen's sex, age at death, and burial type was collected by the standardized methods. The prevalence and number of LEH by tooth type, and the number of LEH by sex, by burial type, and by age at death were analyzed. Mandibular canines were the most frequently affected teeth, maxillary canines coming next in the occurrence of LEH, and the third turned out to be the maxillary incisors. This result generally agrees with the findings from previous studies. When number of LEH by sex was compared, there was no consistent difference by sex which also agrees with the findings of previous studies. Although specimens from lime-mortar burials tended to have less number of LEH then those from earth-pit burials, a probable indication of the socioeconomic status effect on the formation of LEH, the result was not very pronounced. No obvious association between the number of LEH and age at death was found, either. Finally the results from this study were compared with those reported by other researches on LEH worldwide. Although preliminary in its level of analysis, this study is the first report of the patterns of LEH of a skeletal population of Korea. With more studies of human skeletal remains from the past, it is hoped, physical anthropology can contribute to the understanding of the past life of the Korean people.
Anthropology, Physical
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Burial
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Dental Enamel
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Dental Enamel Hypoplasia
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Humans
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Incisor
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Korea
;
Prevalence
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Republic of Korea
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Sex Characteristics
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Social Class
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Tooth